Sanitation system contractors in Union City, CA

3 licenses with the C-42 classification list Union City (Alameda County) as their address with the state, 3 of them active. Active licenses with nothing flagged come first.

• ✓Bayvalley Mechanical IncC-36 · C-42 · #1072787 Union City · Alameda County Active
• ✓Plumbing ConnectionC-36 · C-42 · #944509 Union City · Alameda County Active
• ✓Qualified Plumbers Services IncC-36 · C-42 · #884105 Union City · Alameda County Active

Source: CSLB license file, Nov 8, 2026All trades in Union City